Copper-containing trisazo dyestuffs



United States Patent COPPER-CONTAINING TRISAZO DYESTUFFS Otto Bitterlin, Base], and Werner Bossard, Riehen, near Basel, Switzerland, assignors to J. R. Geigy A.-G., Basel, Switzerland No Drawing. Filed Mar. 31, 1958, Ser. No. 724,867

Claims priority, application Switzerland Apr. 12, 1957 6 Claims. (Cl. 260-145) The present invention concerns a process for the production of copper-containing trisazo dyestuffs which dye cellulose material in blue-green, green-grey to blue-grey fast shades. The invention also embraces the use of these new dyestuffs as well as the material dyed therewith.

Trisazo dyestuffs for cellulose-containing fibres have already been described in which the two middle components are radicals of the benzene and naphthalene series containing alkoxy groups, which radicals are coupled in the 1.4-positions to the azo groups, and in which the end components are radicals of acylated amino-hydroxynaphthalene sulphonic acids. To our knowledge however, only such dyestuifs have attained practical importance in which at least one of the two middle components is of the naphthalene series. If these known direct dyestufis are treated with agents giving olf copper, then coppercontaining dyestuffs are obtained which are insufiiciently fast and/or have bad dyeing properties.

It has now been found that valuable copper-containing dyestuffs which are distinguished in particular by a remarkable tastness to light are obtained by treating tn'sazo dyestuifs of the general formula:

r, it (I) with agents giving off copper. In this formula:

represents an alkoxy group capable of complex formation,

Y represents hydrogen, halogen, an alkyl or alkoxy group,

and of Z and Z the one Z represents an alkoxy or alkyl group and the other Z also represents an alkoxy or an alkyl group or hydrogen or halogen.

As has already been stressed, the new copper-containing dyestuiis according to the present invention are remarkably fast to light. Regenerated cellulose material dyed therewith shows no important alteration in the original shade and hardly any adverse effect on the fastness to light when treated with anti-creasing agents. In addition, the dyeings obtained with the new dyestuffs have good fastness to acid and water. Finally, the dyestuffs are distinguished also by the fact that they dye viscose material very evenly.

The metal-free trisazo dyestuffs used according to the present invention are produced by methods known per se. For example a benzene or naphthalene diazoniurn compound which contains at least one carboxylic acid or Patented May 2, 1961 sulphonic acid group is coupled with an alkoxy or alkyl aminobenzene compound coupling in the p-position to the amino group. The amino-monoazo dyestutf is further diazotised and coupled with an o-alkoxyaminobenzene compound which also couples in the p-position to the amino group, whereupon after again diazotising the aminodisazo dyestufi, the diazo-disazo dyestufli is coupled with an acylamino-hydroxynaphthalene sulphonic acid of the constitution defined.

The aminobenzene and aminonaphthalene carboxylic acids and sulphonic acids usual in polyazo-dyestuifs are used as starting components. It is a condition that they contain no groups capable of complex formation; otherwise they can be :further substituted as desired, for example, they can contain further halogen, nitro, alkyl, alkoxy and acylamino groups. Advantageously mand p-aminobenzoic acids, aniline, toluidine, and xylidine sulphonic acids, chloraniline and nitranili-ne sulphonic acids, aniline disulphonic acids, aminobenzoic sulphonic acids, aminoacetanilide sulphonic acids as Well as aminonaphthalene monoand di-sulphonic acids are used. End products which dissolve Well are obtained by using an aminonaphthalene disulphonic acid.

The alkoxyor alkyl-aminobenzene compounds used as first middle component contain advantageously low molecular, possibly substituted, alkoxy groups, in particular methoxy, ethoxy and fi-hydroxy-ethoxy groups or alkyl groups, in particular methyl groups. Particularly valuable components are those which are also further substituted in the p-position to the alkoxy or alkyl group, for example by halogen and in particular by another alkoXy or alkyl group. Examples are: 2- and 3-methoxyor -methylaminobenzerle, 2- and 3-ethoxy-l-aminobenzene, 2- and 3-propyl0xy-1-aminobenzene, 2.5-dimethoxy- 1- aminobenzene, 2.5dimethyl-l-aminobenzene, 2.5-diethoxy-l-aminobenzene, 2.5 di-fl-hydroxyethoxy 1 aminobenzene, 5-methyl-2-methoxy-l-aminobenzene and 5- chloro-2-methoxy-l-aminobenzene.

The alkoxy group of the o-alkoxyaminobenzene compounds coupling in the p-position to the amino group which are used as second middle components should be easily metallisable. This is possible with the methoxy, ethoxy and carboxymethoxy group. The second middle component can also be further substituted in the p-position to the al'koxy group by further alkoxy groups, halogen or low alkyl groups. Examples are: Z-methoxy-laminobenzene, 2 ethoxy-l-aminobenzene, 5 methyl-2- methoxy-l -aminobenzene, 5 -methyl- 2 -ethox 1 -aminobenzene, 5-chloro-2-methoxy-l-aminobenzene, 2-carboxymethoxy-S-methyl-l-aminobenzene and 2.5-dimethoxy-1- aminobenzene.

Those acylamino-hydroxynaphthalene sulphonic acids are used as end components which in one ring contain an m-hydroxy sulphonic acid grouping and in the other the acylamino group in B-position. By acylamino group is meant here the amino group substituted by a functional carboxylic acid radical. Radicals of carbonic acid derivatives, of aliphatic and aromatic, possibly polyvalent carboxylic acid can be used. Examples are the formyl, acetyl, chloracetyl, propionyl, butyryl, sulphoacetyl, oxalyl, maleinyl, methoxycarbonyl, ethoxycarbonyl, B-methoxyethoxycarbonyl, benzoyl, 4-methylbenzoyl and 4-chlorobenzoyl radicals. Examples of end components are: the 2-acetylamino-6-hydroxynaphthalene-8-sulphonic acid, 2-sulphoacetylamino 6 hydroxynaphthalene8-sulphonic acid, Z-carbomethoxyand -carbethoxy-amino-6-hydroxynaphthalene-S-sulphonic acids, Z-carbo-fl-methoxyethoxyamino-6-hydroxynaphthalene-8-sulphonic acid, Z-oxalylamino-6-hydroxynaphthalene-8-sulphonic acid, 2-benzoylamino 6 -hydroxynaphthalene-8-sulphonic acid, 2-(4- methylbenzoylamino)- 6 hydroxynaphthalene-8-sulphonic i 3 acid and 2-(4-chlorobenzoyl-amino)-6-hydroxynaphtha- Iene-S-sulphonic acid. The acyl derivatives of 2-amino-6- hydroxynaphthalene-S-sulphonic acid are particularly valuable end components as they produce copper-containing dyestufis according to the present invention which are very fast to light and water. However, on using 2-acylamino-8-hydroxynaphthalene-6-sulphonic acids and 2-acylamino-5-hydroxynaphthalene-7 sulphonic acids, valuable copper-containing dyestuffs are also obtained.

The diazo components, middle components and end components of the type mentioned are the starting materials usual in the dyestuif industry. The diazotisation of the starting components of the amino monoand disazo-dyestuifs as well as the coupling of the middle and end components is performed according to the methods usual in the production of such polyazo dyestuffs.

The usual methods are used for the treatment of the trisazo dyestuffs used according to the present invention with agents giving off copper. For example, the treatment can be made in a weakly acid medium. Advantageously the coppering is performed in an aqueous/ alkaline medium at a raised temperature and, as basic reactants advantageously ammonia or water soluble primary, secondary or tertiary amines such as, for example monoethylamine, monoethanolamine, diethylamine, cyclohexylamine, pyridine or 2.6-dirnethylpyridine are used. In particular the copper tetramine complexes obtained by known methods from copper salts and ammonia or organic bases of the type listed above are used as agents giving olf copper.

It is favourable for the dyeing properties of the coppercontaining end products if the trisazo dyestuffs used according to the present invention contain two sulphonic acid groups to each dyestufi molecule and, on using starting components from the naphthalene series, three sulphonic acid groups to each dyestufl? molecule. Particularly valuable end products are obtained in particular from trisazo dyestuffs which contain as first middle component a 2.5-dialkoxyaminobenzene compound and as second middle component, S-methyl-Z-methoxy-1-amino benzene. Co er-containing dyestuffs with such middle components are distinguished by favourable dyeing properties and in addition by their valuable bluish-grey shades. If they also contain the acylation products of Z-amino-6-hydroxynaphthalene-8-sulphonic acid as end components, they also have very good fastness to light and water.

Further details can be seen from the following examples. These serve to illustrate the invention without limiting it in any way however. Where not otherwise stated, in these examples parts are givenas parts by weight and the temperatures are in degrees centigrade. The relationship of parts by weight to parts by volume is that of kilograms to litres.

EXAMPLE 1 The solution of 16 parts of 2.5-dimethoxy-l-aminobenzene in 200 parts of water and parts of hydrochloric acid is poured at 05 into the diazonium compound from 17.3 parts of 3-aminobenzene-1-sulphonic acid. The coupling is completed by the slow addition of 20 parts of sodium acetate in 80 parts of water. The completely formed monoazo dyestuff is dissolved by the addition of 20 parts of sodium carbonate at 70 and is diazotised at 20-25 with 6.9 parts of sodium nitrite and s oaH 73 parts of 30% hydrochloric acid in the presence of 220 parts of sodium chloride. The insoluble diazonium compound is filtered off and is stirred with 300 parts of water. The solution of the hydrochloride of 13.7 parts of 2-methoxy-S-rnethyl-l-arninobenzene in 150 parts of water and then 15 parts of sodium acetate in 40 parts of water are added to this suspension dropwise. On completion of the coupling, the paste of the diazo dyestuff is made alkaline with 15 parts of sodium carbonate, warmed to about 70 and, after the addition of sodium chloride, is filtered. The aminodisazo compound is again pasted in 1300 parts of water and 1 part of sodium hydroxide and diazotised at 2025 with 6.9 parts of sodium nitrite and 61 parts of 30% hydrochloric acid. After some hours, the diazonium compound is filtered off, stirred in 800 parts of ice water and coupled with the ice cold solution of the sodium salt of 29.7 parts of 2-carbomethoxyamino-6-hydroxynaphthalene-S-sulphonic acid, 10 parts of sodium carbonate, 180 parts of pyridine and 400 parts of water to form the trisazo dyestuif. The completely formed dyestuff is salted out, filtered off, dissolved in 1500 parts of water and converted into the copper complex compound of the formula:

OCH; OCli by heating for 5 hours at with 25 parts of crystallised copper sulphate in the presence of 75 parts of 25% ammonia and 75 parts of diethylamine. 75 parts of sodium chloride are added, the copper complex is filtered 0E and dried. The copper-containing trisazo dyestuff is a dark powder which dissolves in water with a green-grey and in concentrated sulphuric acid with a violet-grey colour.

The same result is obtained if the trisazo dyestuif is heated at 95 for 20-40 hours with just 25 parts of crystallised copper sulphate and 75 parts of 25% ammonia, or if additives such as monoethanolamine or pyridine are added. Also boiling under reflux for 40 hours with 25 parts of crystallised copper sulphate and 15 parts of sodium acetate leads to the same product.

Cellulose fibres are dyed with this complex copper compound in greenish-grey shades. The dyeings'have excellent water fastness properties and very good fastness to light. The shade of the dyeing is hardly altered by anti-crease processing and the fastness to light is excellent.

If, in this example instead of 29.7 parts of 2-car bomethoxyamino 6 hydroxynaphthalene-8-sulphonic acid, 28.1 parts of 2-acetylamino-6-hydroxynaphthalene-8- sulphonic acid are used, or instead of 17.3 parts of 3- aminobenzene-l-sulphonic acid and the 29.7 parts of 2- carbomethoxyamino-6-hydroxynaphthalene 8 sulphonic acid, 13.7 parts of 3-aminobenzene-l-carboxylic acid and 28.1 parts of 2-acetylamino-6-hydroxynaphthalene-8- sulphonic acid are used and the same procedure is followed, then dyestuffs having similar properties are obtained.

EXAMPLE 2 The sodium salt of the trisazo dyestufli' from 30.3 parts of 2-aminonaphthalene-4.8-disulphonic acid, 16 parts of 2.S-dimethoxy-l-aminobenzene, 13.7 parts of Z-methoxy- 5-methyl-l-aminobenzene and 28.1 parts of 2-acetylamino-5-1ydroxynaphthalene-7-sulphonic acid produced by the method described in Example 1, is dissolved in 2000 parts of water and converted into the copper complex compound by heating for 10 hours at with 25 parts of crystallised copper sulphate in the presence of 6 75 parts of 25% ammonia and 100 parts of diethylamine. formed is salted out and filtered ofi. The dried dyestufli The copper-containing trisazo dyestufi of the formula: is a dark powder which dissolves in water with a blush- $10311 (i) CHI ?-Qll (I) E; (3H3 SOaH --NHO O-CH3 SOaH is filtered off and in a dry condition is a dark powder grey and in concentrated sulphuric acid with a violet-grey which dissolves in water with a grey-blue and in concencolour. The greenish-grey dyeings on cellulose tfibres trated sulphuric acid with a blue-grey colour. The dyehave remarkable wet fastness properties and very good Stuff Produces blueish-gley dyeings 0!! 0611111086 fibres fastness to light which is also retained after anti-crease which have been anti-crease processed. The dyeings have processing good Wet and 'lig'ht'fasmess p p If the trisazo dyestufi is treated for -40 hours with The copper complex formation is also completed if the Parts f copper Smphate and 75 parts f 25% trisazo dyestuir is treated at 95 in 2000 parts of water monia alone or for 10 hours with the addition f 50 parts with 25 Parts of copper Sulphate 75 Pmts of 25% of n'dine then a similar co er com lex com und is ammonia alone or with the addition of 50 parts of monoiz e pp p p0 ethanolamine or of 10 parts of pyridine. 20

If, in the production of the above trisazo dyestufi, 28.1 parts of 2-acetylarnino-8-hydroxynaphthalene-6-sulphonic acid are used instead of 28.1 parts of Z-acetylamino-S-hydroxynaphthalene-7-sulphonic acid and otherwise the d f 11 ed, thenaco er-conta'nin d e- 25 Same pmce me 1S 0 Ow pp 1 g y 8-sulphoruc acid and the same procedure 1s followed, then stutf with similar properties is obtained.

a copper-containing dyestuif is obtained which has similar EXAMPLE 3 properties. 74.7 parts of the trisazo dyestutf 3-aminobenzene-1- sulphonic acid-e3-methoxy-l-aminobenzene-eZ-methoxy- EXAMPLE 5 S-methyl 1 =aminobenzene 2-acetylamino-6 hydroxynaphthalene-8-sulphonic acid, produced analogously to the manner described in Example 1, are dissolved in 2000 parts of water. The copper complex compound is produced by heating for 20 hours at 95 with 25 parts of crystallised copper Sulphate and 75 Parts of 25% 2.5-d1-fl-hydroxyethoxy-l-armnobenzene, 13.7 parts of 2- monia. The copper complex is salted out, filtered otf methoxyis'methyl'l'aminobenzene and and dried. It is a dark powder which dissolves both in acetylanflmo6hydroxynaphthalene'8'sulphomc acld 1S Water and in concentrated sulphuric acid with a green solved in 1500 parts of water and converted into the grey colour. The copper containing dyestuflf of the 0 pp complex compound y heating 30 hours at If in the production of the trisazo dyestufi? of the formula given above, the Z-methoxy-l-aniinobenzene is replaced by 2-carboxymethoxy-S-methyl-l-aminobenzene and the 2- carbomethoxyamino-6-hydroxynaphthalene-8-sulphonic acid is replaced by 2-acetylamino-6-hydroxynaphthalene- The sodium salt of the trisazo dyestutf produced according to the method described in Example 1 from 17.3 parts of S-aminobenzene-l-sulphonic acid, 18.5 parts of f l 95 with 25 parts of crystallised copper sulphate and 75 OCHa O-Gu (I) MGMQH .80...

803E CH5 dyes cellulose-containing fibres in green-grey shades. It Parts of 25% ammonia- The WITH-containing dyestllfi has good wet fastness properties and retains good fastness of the formula:

to light also after anti-crease processing. 062E401; O

The copper complex compound is also obtained if the trisazo dyestufi is treated for 10 hours with the addition O so H of 100 parts of pyridine or 100 parts of diethylamine. 3

If in the production of the trisazo dyestutf of the above 6 formula, the Z-acetylamino-6-hydroxynaphthalene-8-sulphonic acid is replaced by 2-carbomethoxy-amino-G-hyslOaH OCRHmH droxynaphthalene-8-sulphonic acid and the same pro- 3 cedure is followed, then a similar greenish dyestufi is 00 is Salted out, filtered Off and dried- It is a dark Powder obtained which has similar properties, which dissolves in water with a blue-grey and in concen- EXAMPLE 4 trated sulphuric acid with a violet-grey colour. Greenishgrey dyeings are obtained therewith which have good wet 77.9 parts of the trisazo dyestufi of the formula: fastness properties and remarkable fastness to light which OCH: OCHs OH S O3H (50113 in the form of the sodium salt are dissolved in 1000 parts of water and the solution is stirred for 40 hours with 25 is retained after anti-crease processing. The same copper parts of crystallised copper sulphate and 15 parts of compound is also obtained if the trisazo dyestutf is treated sodium acetate at 95. The copper complex compound under the same conditions as described but with the addition of 50 parts of cyclohexy-lamine or 75 parts of dimethylamine. I

SOzH

If in this example, 35.7 parts of 2-(4'-methy lbenzoylamino)-6-hydroxynaphthalene-8-sulphonic acid or 31.1 parts of 2-carbomethoxyamino-6-hydroxynaphthalene-S- suiphonic acid are used instead of 28.1 parts of 2-acetylamino-6-hydroxynaphthalene-8-sulphonic acid and otherwise the same procedure as described above is followed, then dyestufis having similar properties are obtained.

' EXAMPLE 6 and converted into the copper complex compound of the formula:

l CH3 303E by heating for 10 hours at 95 with parts of crystallised copper sulphate, 75 parts of 25% ammonia and parts of monoethanolamine. Thecopper-containing trisazo dyestuif is filtered off and dried. The dark powder dissolves inwater with a green-grey and in concentrated sulphuric acid with a blue-grey colour. Cellulose fibres are dyed in greenish-grey shades and the dyeings have good fastness to wet and light. The dyeings undergo anticrease processing very Well.

Dyestuffs with similar properties are obtained if in the above example the 13. 0 parts of Z-methoxy-sl-aminobenzene are replaced by 17 parts of S-chloro-Z-methoxyl-aminobenzene or 'by 16 parts of 2.5-dimethoxy-1- arninobenzene and otherwise the same procedure is followed. 4

If the components listed in the following Table 1 are used in the amounts given as described in Examples 1-6, then similar copper-containing trisazo dyestuffs are obtained. The shade of'the" copper complex compound on cotton is given in the last column.

Table 1 N0. Starting component 1st middle component 2nd middle component End component Shade 1 Z-aminonaphthalene-4.8-di- 5 chloro 2 methoxy 1 5 methyl 2 methoxy 1 Z-carbo-B-methoxy-ethoxyamin0- Green-grey.

sulphonic acid (30.3 parts). aminobenzene (15. aminobenzene (13 7 6 hydroxynaphthalene 8 sul parts). parts). phonic acid (34.1 parts).

2 ..do 5-methy1- Z-methoxy 1 5 chloro 2 methoxy 1 .do g i h grey; aminobenzene (13.7 aminobenzene (15.75 parts). parts).

3 2-aminonaphthalene-6.8-di- 2.5-diethoxy-1-aminoben- 2 -methoxy 5 -methyl 1 2-benzoyl-S-hydroxynaphthalene- Do.

. sulphonicacid (30.3parts). zene (18.1 parts). amiiagob enzene (13.7 8-sulphonic acid (34.3 parts).

' par s 4 2-aminobenzoic acid-5-sul- 5 methyl 2 methoxy 1 .do 2 carbethoxyamino 6 hydroxy Green-grey.

phonic acid (21.7 parts). aminobenzene (13. 7 naphthalene 8 sulphonic acid parts). (31.1 parts). 5 do "d0 do 2-carbo-B-methoxy-ethoxyamino- D I 6 hydroxynaphthalene 8 sul phonic acid (34.1 parts).

6 4-aminobenzene-1-sulphonic 2.5 dimethoxy 1 amino .do 2-acetylamino-fi-hydroxynaphtha.

acid (17.3 parts). benzene (15.3 parts). iene-8-sulphonic acid (28.1 parts).

7 ..do dn dfl ?rm-SIJlDhOaCetYlamino-fi-hydroxy- D0.

naphthalene-S-suiphonic acid (36.1 parts). 8 z-nitro-l-aminobenzenei- 2.5-d1methoxy-l -amino- 5-methyl-2-methoxy-1- .--.-dc Gr9enish-g ey sulphonic acid (21.8 parts). benzene (15.3 parts). amigobenzene (13.7

par s 9 o do Z-acetylamino-fi-hydroxynaphtha- Do,

; lene-8-sulphonic acid (28.1 83.1178). 10. 3-amincbenzenel-sulphonic 2.5 dimethoxy 1 amino- 5 methyl 2 methoxy -1 2 benzoylamino 6 hy roxy- Do.

acid (17.3 parts). benzene (15.3parts). aminobenzene (13.7 parts). (rgilzghthalene 8 sulphonic acid par 3 11. Z-aminohenzene-l-sulphonic 2-acetylamino-G-hydroxynaphtha- Green-grey.

acid (17.3 parts). lene-S-sulphonic acid (28.1 parts). 12. 4-methy11-aminobenzene-3- do do D snlphonic acid (18.7 parts). 13. 4-amingbenzoic acid 13.7 .--.-do dn dn D parts 14. 3-aminobenzeuc-l-sulphonic 2.S-di-B-hydroxy-ethoxy-I- -do 2-Garbomethoxy-amino-E-hydroxy- D acid (17.3 parts). aminobenzene (18.5 parts). igiap lllthaltegie 7 sulphonic acid par s i5 0 2- carboethoxy -amino 8 -hydroxy- D Etlpilthal gie 6 sulphonic acid D8! 16. 2.4-dimethyl-1-amino-ben- 2.5-dimethoxy-1-aminoben- 5 chloro 2 methoxy 1 2 co suiphoacetyl amino 8 hy- Greenish-grey.

zene-(rsulphonic acid (20.1 zenc (15.3 parts). aminobenzene (15.75 droxy-naphthalcne-fi-sulphonic parts). 7 p parts). acid (36.1 parts). 17 do dn dn 7 2-wasulphoacetyl-amino-5-hyd.roxy- Do naphthalene 7 sulphonic acid (36.1 parts). 18 2-aminobenzene-1-sulphonic 5 methyl 2 methoxy 1 Z-methoxy-l-aminobenzene 2-acetylamino-6-hydroxynaphtha- Bluish-grey.

acid (17.3 parts). amino)benzene (13.7 (12.3 parts). 1ene-7-sulphonic acid (28.1 parts).

par s 19. 4-aminobenzene-1-su1phonic ....do do acid (17.3 parts).

20 ..do... Z-methoxy-l-ammcbemcne 5 -m ethy1-2-methoxy 1 2-carbomethoxy-amino-8-hydroxy- (heembgmm (12.3 parts). ammobenzene (13.7 parts). rzzaihthagtene 6 sulphonic acid pa s 21 3-aminobenzene-1-sulphonic 2.5-dimethoxy-l-aminobend n d 0 Grey acid (17.3 parts). zene (15.3 parts). p 22. 2 amino naphthalene -6.8 5 chloro 2 methoxy 1 do 2-ca1'bo-fl-methoxy-ethoxyamin0-8- D disulphonic acid (30.3 parts). aminobenzene (16.75 hydroxynaphthaiene-fi-s lphonic V parts). acid (34.1 parts).

23.-- do do 2-carbo-fl-methoxy-ethoxyamino-5- Bluish-grey.

' hydroxynaphthalene-7-suiphonic acid (34.1 parts).

are added at 150 parts of Water is added to this suspension and then the solution of 15 parts of sodium acetate in 40 parts of water is added. On completion of the coupling, the 70 disazo dyestuff suspension is mixed with 15 parts of sodium carbonate, the mixture having an alkaline reaction, and sodium chloride is added at 80. disazo dyestufi which precipitates is further diazotised as described in Example 1, the diazonium compound is pre- 75 The hydrochloride Table lContinued No. Starting component 1st middle component 2nd middle component End component Shade 24. 4 -amino-1 -acetylarnino -ben- 3-methoxy-1-aminobenzene 5 methyl 2 methoxy 1 24-:su1phoacetyI-amino-B-hydroxy- Green-grey.

zeneta-g-sulphonic acid (23.0 (12.3 parts). aminobenzene (13.7 parts). gszgplithslxene 6 sulphonic acid par 5 a s 25. B-aminobenzene-l-sulphonic 3 -methoxy-1-aminoben- 5 -methyl-2-methoxy- 1 2acety amino-S-hydroxynaphtha- Do. acid (17.3 parts). zene (12.3 parts). am i1130b enz one (1 3 7 lene-fi-sulphonic acid (28.1 parts).

par s I 26- 4-amino-1-acetylamino-benz-methoxy-l-aminoben dn do Do.

zene-2-sulphonic acid (23.0 zene (12.3 parts). par s 27. 2-nltro-1-aminobenzene-4- 2.5-dimethoxy-1-amino do do Bluish-grey.

sulphonic acid (21.8 parts). benzene (15.3 parts). 28- 1-aminonaphthalene-4-sul- 2.5-di-B-hydroxy ethoxy 2 earboxy methoxy 5 2-w-sulphoacetyl-amino5hydroxy- Do. phonic acid (22.3 parts). l-aminobenzene 18.5 methyl-l-aminobenzene naphthalene 7 sulphonic acid parts). (18.1 parts). (36.1 parts). 29- 4-chloro-1-aminobenzene-2- -do do do Do. sulphonic acid (20.75

parts). 30- 4-methyl-l-aminobenzene-3- do do Do.

sulphonic acid (18.7 parts). 31. 1-aminonaphthalene-7-sul- 2.5 dimethoxy 1 amino 2 -methoxy 1 aminoben 2-w-sulphoacetylammo-S-hydroxy- Greenish-grey.

phonic acid (22.3 parts). benzene (15.3 parts). zene (12.3 parts). ngpiathaiene -6 sulphonic acid par s 32. do do 2-carbo-B-methoxy-ethoxyamino- Do.

8 hydroxynaphthalene 6 sul phonic acid (34.1 parts). 33- 2- aminonaphthalene B-sul 2.5 dimethoxy 1 amino 5 methyl 2 methoxy 1 2- carbo -,8 methoxyethoxyamino Bluish-grey.

phonic acid (22.3 parts). benzene (15.3 parts). aminobenzene (13. 7 5 -hydroxynaphthalene 7 sulparts). phonic acid (34.1 parts). 34. do n 2-carbomethoxyainino-5-hydroxy- Do.

naphthalene 7 sulphonic acid (29.7 parts). 35. 3-aminobenzene-l-s1flphonic do rln Z-benzoylarnino-5-hydroxynaph- Do. acid (17.3 parts). thaltelfefl-sulphonic acid 4.3 par s 36 -do 2-benzoylamino-8-hydroxynaph- Greenish-grey.

thalbeale-osulphonic acid (34.3 par s 37-... l-amlnobenzene -2.5-disul- 2.5-diethoxy-1-aminobendo do D phonic acid (25.3 parts). zene (18.1 parts). 38- B-aminobenzene-l-sulphonic 2.5 dimethoxy 1 amino do 2 carboethoxyamino 5 hydroxy Blueish-grey.

acid (17.3 parts). benzene (15.3 parts). lgphthalteneq -sulphonic acid 1. par s 39..-- l-aminonaphthalene-c-sul fln do Do.

phonic acid (22.3 parts). 40 rln "NJ" .do 2- carboethoxyamino-8-hydroxy-- Do,

naphthalene 6 sulphonic acid (31.1 parts). 41 1-aminobenzene-2.5-disul- 2.5-diethoxy-1-aminoben- .do 2-benzoylamino-5-hydroxynaph- Do. phonic acid (25.3 parts). zene (18.1 parts). thaleneJ-sulphonic acid (34.3

, par s 42- 2 aminonaphthalene 4.8 2.5 dibutyloxy 1 amino- 5 methyl 2 methoxy 1- 2 acetylamino 5 hydroxynaph- Green grey.

dis1t1sl)phonie acid (30.3 benzene (23.7 parts). amiizlaobenzene (13.7 thaltene 7 sulphonic acid (28.1 per par s er s 43 8-aminobenz0lc acid (13.7 2.5 dimethoxy 1 aminc- 5 methyl 2 methoxy 1 2 carbo B methoxyethoxyamino- Do. parts). benzene (15.3 parts). aminobenzene (13. 7 8 hydroxynaphthalene 6 sulparts). phonic acid (34.1 parts). 44- 3-aminobenzoic acid (13.7 (in do 2 acetylamino 8 hydroxynaph- Do. parts). thaltepe-fi-sulphonic acid (28.1

par s 45. 4-aminobenzoic acid (13.7 -.--do 5 methyl 2 ethoxyl 1- -do Do.

parts amigobenzene (18.1

par 46"--. 3 aminobenzene 1 sul- 5-methy1-2-methoxy-1- 2.5 diethoxy 1 amino- 2 acetylamino 5 hydroxynaph- Blue-grey.

phonic acid (17.3 parts). aminobenzene (13.7 benzene (18.1 parts). thalene-7-su1phonic acid (28.1

parts). parts).

EXAMPLE 7 50 cipitated and stirred in 800 parts of ice water. This diazo suspension is coupled by the known method with 28.1 parts of 2-acetylarnino-6-hydroxynaphthalene-8- sulphonic acid to form the trisazo dyestufi and the dyestuif formed is salted out and filtered oif. Aiter dissolving it in 2000 parts of Water, 25 parts of crystallised copper sulphate are added in the presence of parts of 25% ammonia and 100 parts of diethylamine and the dyestufi is then converted into the copper complex compound by heating [for 10 hours at The copper-containing trisazo dyestuff of the formula:

The amino NH-C o-oCH.

is then salted out, filtered off and dried. It is a dark powder which dissolves in water with a blue-green and in concentrated sulphuric acid with a blue-grey colour. The dark green dyeings on cellulose fibres have very good wet and light fastness properties and are suitable for anti-crease processing.

It the components listed in the following Table 2 are used in the amounts given and the procedure described 11 in Example 7 is followed, then similar copper-containing tnisazo dyestufis are obtained.

t 12 wherein A represents radicals selected from the group consisting Table 2 N0. Starting component 1st middle component 2nd middle component End component Shade 1 2aminobenzene-1-sulphonic 2.5-dimethyl- 1- aminoben- 5 methyl 2 methoxy 1 2-carbomethoxyamino-6-hydroxy- Blue-green.

acid (17.3 parts). zene (12.1 parts). aminob enz ene (13 7 naphthalene 8 sulphonic acid parts). (29.7 parts). do 3-methyl-1-aminobenzenc do do Do.

(10.7 parts). -do do d 2-acetylamino-fi-hydroxynaph- D0.

4 thalter)ie-8-sulphonic acid (28.1

par s 4 do 2-methyl-1-aminobenzene do do Do.

7 (107 parts). 7 5 3-aminobenzene1-snlphonic 2.5-din1ethy1-1-aminobendo do Grey-green. acid (17.3 parts). zene (12.1 parts). 7 6 4-aminobenzened-sulphonic do ..do do Blue-green;

acid (17.3 parts). 7 do do ..d 2-carb0meth0xyamino-6-hydroxy- Olive green.

naphthalene 8 sulphonic acid (29.7 parts). 8 2.4 dimethyl 1 aminoben .do. do 2-acetylamino-fi-hydroxynaphtha- Blue-green;

zeng-gi-sulphonic acid (20.1 lene-B-sulphonic acid (28.1 parts). par 5 9 2rmethyld-aminobenzene-5- d0 do do Grey-green.

sulphonic acid (18.7 parts). 10 2 methyl 1 aminoben 2.5 dimethyl 1 ammo 5 methyl 2 methoxy 2 acetylalnino s-hydroxynaph Violet-grey. zene -5- sulfonic acid (18.7 benzene (12.1 parts). 1 aminobenzenc (13.7 thalene 6 sulphonic acid (28.1 parts). D ts). parts). 11.-- 2 aminonaphthalene 4.8 3 methyl 1 aminoben do do Green-grey.

disulphonic acid (30.3 zenc (10.7 parts). parts). 12 do d0 .d0 2 acetylamino 6 hydroxynaph- Olive-grey.

thaltegie 8 sulphonic acid (28.1 par s 13 2 aminobenzene 1 sul 2.5 dimcthyl 1 amino 2.5-dlmethoxy-l-aminodo Blue-green,

phonic acid (17 3 parts). benezene (12.1 parts). benezene (15.3 parts) 14 do 3 e y 1 amlnoben -----do.-. 2 -carbomethoxyamino-fi-hydroxy- D Z8116 (10.7 D ngt lithalggie 8 sulphonic acid par 15... do do 2.5 di B hydroxyeth 2 -acetylamino -8-hydroxynaph Green-grey.

. oxy 1 aminobenzene thalene 6 sulphonic acid (28.1

(18.5 parts). parts).

EXAMPLE 8 1.5 parts of the copper-containing trisazo dyestutf obtained according to Example 1 is dissolved in a dyebath containing 3000 parts of water and 2 parts of sodium 100 parts of cotton are entered at -50", the bath is heated to 90-95 within 30 minutes and a then 30 parts of sodium sulphate are added. Dyeing is performed for minutes at this temperature and then the goods are rinsed and dried. The cotton is dyed in greenish-grey shades which have good wet fastness properties and very good fastness to light. can be subjected to anti-crease processing without any noticeable change in the shade or in the fastness to light.

carbonate.-

' What we claim is:

1. A cupriferous trisazo dyestuif of the general formula:

The dyed goods of the benzene and naphthalene series containing at least an acid group selected from the group consisting of -SO H and COOH and being free from copper 40 complex-forming groups,

B represents the radical of an m-hydroxynaphthalene monosulphonic acid bound to the azo group in o-position to the hydroxyl group and containing an acylamino '45 group in the i-position in the nucleus having no sulphonic acid group,

Y represents a member selected from the group consisting of hydrogen, halogen, lower alkyl and alkoxy groups,

' and of v Z and Z one Z represents a member selected from the group consisting of lower alkyl and alkoxy groups, the other Z represents a member selected from the group 66 consisting of hydrogen, halogen, lower alkyl and alkoxy groups.

2. A cupriferous trisazo dyestuif of the formula:

0 CH3 O-Cu-0 I I saNQMQa 8 NH-C 0-0 CH2- 3. A cupriferous trisazo dyestuif of the formula:

13 T4 4. A cupriferous trisazo dyestufl of the formula:

NH-C 0--0 CHI 5. A cupriferous trisazo dyestufi of the formula:

SOaH CH3 0 o-cm 6. A cupriferous trisazo dyestufi of the formula:

00H; OCu-0 References Cited in thefile of this patent UNITED STATES PATENTS 2,769,805 Hanhart Nov. 6, 1956 

1. A CUPRIFEROUS TRISAZO DYESTUFF OF THE GENERAL FORMULA: 